Year % of GDP 2010 29.877515302396667 2011 33.64431500978378 2012 31.754929333015713 2013 34.038498390944355 2014 34.06942706805624 2015 42.80487073360926 2016 38.2062329591204 2017 41.002991488394 2018 38.641079803989165 2019 39.26190698260694 2020 32.24474843111018 2021 31.36682025783206 2022 26.980492238461988